Not legal or tax advice. This is general information, not legal or tax advice. LLC and tax rules vary by state and change over time — verify the current rules for your state and consult a qualified business attorney or tax adviser before relying on this document.
What an operating agreement actually is
An operating agreement is the rulebook for a US limited liability company. The state creates your LLC when you file the articles of organization, but the state does not tell you how to run it. That is what the operating agreement does: it is the private contract among the members that answers the questions the public filing does not — who owns what, who decides what, how money is shared, and what happens when someone leaves or dies.
It is easy to underestimate because, in most states, you are not legally required to have one. But “not required” is misleading. If you do not write your own rules, your LLC is governed entirely by your state’s default LLC statute — a set of one-size-fits-all rules written for the average company, which is to say, no real company. The defaults decide how profits split, how members vote, and what happens to a deceased member’s interest, and they frequently decide it in a way none of the members would have chosen.
There is a second, quieter function. An LLC’s whole purpose is the liability shield — the separation between the company’s debts and the members’ personal assets. Courts can “pierce the veil” and reach members personally when the LLC is not run as a genuine separate entity. A signed operating agreement, followed in practice, is one of the strongest pieces of evidence that the LLC is real and separate. For a single-member LLC especially, the operating agreement is not paperwork for its own sake — it is part of what keeps your house out of reach of the business’s creditors.
When you need one
Forming any LLC. Single-member or multi-member, the moment you form the LLC you should have an operating agreement. For multi-member LLCs it prevents disputes; for single-member LLCs it protects the liability shield.
Opening a business bank account. Many banks ask to see the operating agreement before opening an account for an LLC, particularly a multi-member one, because it shows who has authority to act for the company.
Bringing in investors or partners. When a new member contributes capital, the operating agreement defines their stake, their rights, and the terms on which they can later exit. Investors will expect to review and negotiate it.
Raising finance. Lenders frequently ask for the operating agreement to confirm who is authorised to borrow on the company’s behalf and to understand the ownership structure behind the loan.
States that require it. California, New York, Missouri, Maine, and Delaware require an LLC to have an operating agreement (New York requires it in writing). In those states it is not optional.
What it must include
A complete operating agreement covers:
- Company identification. The LLC’s legal name, state of formation, principal place of business, and formation date.
- Members and ownership. Each member’s full legal name, address, and ownership percentage (membership interest).
- Capital contributions. What each member contributed — cash, property, or services — and its agreed value. This usually sets the ownership split.
- Management structure. Member-managed or manager-managed, and who has authority to bind the company.
- Profit and loss allocation and distributions. How profits and losses are shared, and how and when distributions of cash are made.
- Voting rights. What decisions require a member vote, and whether votes are weighted by ownership or one-per-member.
- Transfer and buy-sell provisions. What happens when a member wants to sell, dies, divorces, or goes bankrupt — and how their interest is valued and bought out.
- Dissolution. The events that trigger winding up the LLC and how assets are distributed on dissolution.
- Amendment and signatures. How the agreement can be changed, followed by every member’s signature and date.
Variants
Single-member operating agreement. Shorter and simpler — there is only one member, so voting and buy-sell provisions among members fall away. But it still records the capital contribution, confirms the member’s management authority, states the tax treatment (disregarded entity by default), and — crucially — documents the separation between the member and the company. Banks, the IRS, and any future buyer of the business will expect it.
Multi-member, member-managed. The common small-business case: two or more members who all participate in running the company. The agreement must carefully set out voting, profit splits, and what happens when members disagree or one wants out. Deadlock provisions (how to break a tie between two equal members) earn their keep here.
Multi-member, manager-managed. Used where some members are passive investors and others (or an outside manager) run the company. The agreement separates ownership from control: investors hold membership interests and economic rights, while the manager has operational authority. This structure suits real-estate LLCs and ventures with silent investors.
State-specific drafting. Because a few states mandate an operating agreement and all states have their own default rules, the agreement should be checked against the governing state’s LLC act — for example, California’s Revised Uniform Limited Liability Company Act (Corporations Code §17701.01 et seq.) or Delaware’s Limited Liability Company Act. The builder produces a state-aware draft; the substance is broadly portable, but the mandatory clauses and defaults differ.
Step-by-step
Step 1 — Identify the company and members. Legal name, state of formation, principal address, formation date, and every member’s name, address, and ownership percentage.
Step 2 — Record capital contributions. State what each member put in — cash, property, or services — and its agreed value. This usually drives the ownership split, so get the numbers and the percentages to reconcile.
Step 3 — Choose the management structure. Member-managed or manager-managed. Name who can sign contracts, open accounts, and bind the company. Ambiguity here causes real disputes about who had authority to do what.
Step 4 — Set the economics. How profits and losses are allocated (by percentage, or a special allocation), and how and when distributions are made — on a schedule, at the managers’ discretion, or only from surplus cash.
Step 5 — Define voting and major decisions. List the decisions that require a member vote (admitting a member, taking on debt, selling the business) and the threshold required. Decide whether votes are weighted by ownership or one-per-member.
Step 6 — Add buy-sell and dissolution provisions. What happens when a member exits, dies, or becomes incapacitated; how their interest is valued and paid for; and what triggers dissolution. Then every member signs and dates, and each keeps a copy.
Common mistakes
Mistake 1: Not having one at all. The most common mistake, especially for single-member LLCs. It leaves the company governed by state defaults and weakens the liability shield.
Mistake 2: Ownership percentages that do not match contributions. If three members contribute equally but the agreement says one owns 50%, expect a dispute. The percentages, the contributions, and the members’ understanding must reconcile.
Mistake 3: Skipping the buy-sell provision. As above — the most-regretted omission. Plan for a member leaving before one does.
Mistake 4: Confusing distributions with allocations. The profit allocated to a member for tax purposes is not the same as the cash distributed to them. Members can owe tax on profit they have not received in cash (the “phantom income” problem). The agreement should address tax distributions to cover members’ liabilities.
Mistake 5: No amendment clause. Without one, you default to the state statute, which often requires unanimous consent to change anything. State how the agreement can be amended.
Mistake 6: Unsigned by all members. A member who never signed can argue they are not bound. Every member signs; new members sign a joinder.
Worked example
Two friends, Dana Reyes and Marcus Lin, form Riverstone Studio LLC in California to run a design business. Dana contributes $30,000 in cash; Marcus contributes design equipment valued at $10,000 and will work full-time in the business.
Their operating agreement records: Riverstone Studio LLC, formed in California; Dana and Marcus as the two members. They agree ownership of 60% Dana / 40% Marcus, reflecting the contributions plus a side agreement valuing Marcus’s full-time labour. They choose member-managed, with both able to sign contracts up to $5,000 and joint approval required above that.
Profits are allocated 60/40, but they agree a tax-distribution clause: each year the company distributes enough cash for each member to cover the tax on their allocated profit, before any discretionary distributions. Voting is by ownership percentage, except that admitting a new member or selling the business requires unanimous consent.
The buy-sell provision states that if either member dies or wants to leave, the other has the right to buy their interest, valued at two times the prior year’s net profit multiplied by the departing member’s percentage, payable over 24 months. Because California requires an operating agreement and because both members want the liability shield to hold, they both sign and date it and each keeps an original.
Notice what this agreement prevents: a future dispute about who owns what (the 60/40 split is documented and tied to contributions), a member being landed with a tax bill on cash they never received (the tax-distribution clause), and the business ending up half-owned by a deceased member’s family (the buy-sell). None of these problems is visible at formation, which is exactly why they get skipped — and exactly why writing them down now is worth it.
Primary sources
- SBA — Choose a business structure — sba.gov/business-guide/launch-your-business/choose-business-structure — the Small Business Administration’s overview of the LLC and how it compares to other structures.
- IRS — Limited Liability Company (LLC) — irs.gov/businesses/small-businesses-self-employed/limited-liability-company-llc — the federal tax treatment of LLCs, including the default classifications and the option to elect corporate taxation.
- California Revised Uniform Limited Liability Company Act — Corporations Code §17701.01 et seq. — an example of a state LLC act that both requires an operating agreement and supplies the default rules that apply where the agreement is silent.
Because LLC law is state law, the governing statute is whichever state’s LLC act applies to your company (Delaware’s LLC Act and New York’s LLC Law are two other heavily used examples). The federal layer — how the LLC is taxed — comes from the IRS.
Related categories
An operating agreement governs the entity; the financial documents that entity produces live in the business hub — start with the balance sheet template for the LLC’s accounts. Among legal documents, an LLC that lends or borrows money will need a promissory note; one that rents premises will need a rental agreement; and one that hires people will use the offer letter and, when staff leave, the resignation letter. If the LLC buys or sells assets, the bill of sale records the transfer.